/*
 * SPDX-License-Identifier: Apache-2.0
 *
 * The OpenSearch Contributors require contributions made to
 * this file be licensed under the Apache-2.0 license or a
 * compatible open source license.
 */

/*
 * Licensed to Elasticsearch under one or more contributor
 * license agreements. See the NOTICE file distributed with
 * this work for additional information regarding copyright
 * ownership. Elasticsearch licenses this file to you under
 * the Apache License, Version 2.0 (the "License"); you may
 * not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

/*
 * Modifications Copyright OpenSearch Contributors. See
 * GitHub history for details.
 */

package org.opensearch.client;

import org.apache.http.HttpHost;
import org.opensearch.client.Node.Roles;

import java.util.Arrays;
import java.util.Collections;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.TreeSet;

import static java.util.Collections.singleton;
import static java.util.Collections.singletonList;
import static java.util.Collections.singletonMap;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertThat;
import static org.junit.Assert.assertTrue;
import static org.hamcrest.CoreMatchers.equalTo;

public class NodeTests extends RestClientTestCase {
    public void testToString() {
        Map<String, List<String>> attributes = new HashMap<>();
        attributes.put("foo", singletonList("bar"));
        attributes.put("baz", Arrays.asList("bort", "zoom"));
        assertEquals("[host=http://1]", new Node(new HttpHost("1")).toString());
        assertEquals(
            "[host=http://1, attributes={foo=[bar], baz=[bort, zoom]}]",
            new Node(new HttpHost("1"), null, null, null, null, attributes).toString()
        );
        assertEquals(
            "[host=http://1, roles=data,ingest,master]",
            new Node(new HttpHost("1"), null, null, null, new Roles(new TreeSet<>(Arrays.asList("master", "data", "ingest"))), null)
                .toString()
        );
        assertEquals("[host=http://1, version=ver]", new Node(new HttpHost("1"), null, null, "ver", null, null).toString());
        assertEquals("[host=http://1, name=nam]", new Node(new HttpHost("1"), null, "nam", null, null, null).toString());
        assertEquals(
            "[host=http://1, bound=[http://1, http://2]]",
            new Node(new HttpHost("1"), new HashSet<>(Arrays.asList(new HttpHost("1"), new HttpHost("2"))), null, null, null, null)
                .toString()
        );
        assertEquals(
            "[host=http://1, bound=[http://1, http://2], "
                + "name=nam, version=ver, roles=master, attributes={foo=[bar], baz=[bort, zoom]}]",
            new Node(
                new HttpHost("1"),
                new HashSet<>(Arrays.asList(new HttpHost("1"), new HttpHost("2"))),
                "nam",
                "ver",
                new Roles(Collections.singleton("master")),
                attributes
            ).toString()
        );
    }

    public void testEqualsAndHashCode() {
        HttpHost host = new HttpHost(randomAsciiAlphanumOfLength(5));
        Node node = new Node(
            host,
            randomBoolean() ? null : singleton(host),
            randomBoolean() ? null : randomAsciiAlphanumOfLength(5),
            randomBoolean() ? null : randomAsciiAlphanumOfLength(5),
            randomBoolean() ? null : new Roles(new TreeSet<>(Arrays.asList("master", "data", "ingest"))),
            randomBoolean() ? null : singletonMap("foo", singletonList("bar"))
        );
        assertFalse(node.equals(null));
        assertTrue(node.equals(node));
        assertEquals(node.hashCode(), node.hashCode());
        Node copy = new Node(host, node.getBoundHosts(), node.getName(), node.getVersion(), node.getRoles(), node.getAttributes());
        assertTrue(node.equals(copy));
        assertEquals(node.hashCode(), copy.hashCode());
        assertFalse(
            node.equals(
                new Node(
                    new HttpHost(host.toHostString() + "changed"),
                    node.getBoundHosts(),
                    node.getName(),
                    node.getVersion(),
                    node.getRoles(),
                    node.getAttributes()
                )
            )
        );
        assertFalse(
            node.equals(
                new Node(
                    host,
                    new HashSet<>(Arrays.asList(host, new HttpHost(host.toHostString() + "changed"))),
                    node.getName(),
                    node.getVersion(),
                    node.getRoles(),
                    node.getAttributes()
                )
            )
        );
        assertFalse(
            node.equals(
                new Node(host, node.getBoundHosts(), node.getName() + "changed", node.getVersion(), node.getRoles(), node.getAttributes())
            )
        );
        assertFalse(
            node.equals(
                new Node(host, node.getBoundHosts(), node.getName(), node.getVersion() + "changed", node.getRoles(), node.getAttributes())
            )
        );
        assertFalse(
            node.equals(
                new Node(
                    host,
                    node.getBoundHosts(),
                    node.getName(),
                    node.getVersion(),
                    new Roles(Collections.emptySet()),
                    node.getAttributes()
                )
            )
        );
        assertFalse(
            node.equals(
                new Node(
                    host,
                    node.getBoundHosts(),
                    node.getName(),
                    node.getVersion(),
                    node.getRoles(),
                    singletonMap("bort", singletonList("bing"))
                )
            )
        );
    }

    public void testIsSearchNode() {
        Roles searchRole = new Roles(Collections.singleton("search"));
        assertThat(searchRole.isSearch(), equalTo(true));
    }
}
